CDtechno SX400-U1C, SX400-U1D, SX400-U1B, SX400-U1A Datasheet

Product Data Sheet

400 WATT

AC/DC POWER SUPPLY

SX400

FEATURES

l Active Power Factor Correction
l Active Current Sharing With ORing Diodes
l FCC/VDE Class B EMI Filter
l Optional Active Inrush Current Limit
l Compact Size: 10” x 4.85” x 2.19”
l Optional SCR Crowbar
l Optional Cover With Fan

3400 E Britannia Drive • Tucson, Arizona 85706 • Phone: [phone] • Fax: [phone] • Internet: http://www.cdpowerelectronics.com

SX400 2/98 REV A Page 1

DESCRIPTION

The SX400 is a compact 400 watt Power Factor
Corrected, single output power supply. Active
current sharing circuitry with ORing diodes, to­gether with control functions and alarm options,
simplifies N+1 and redundant applications.

AGENCY APPROVALS

See “Safety” section on page 2 for more information

Input Specifications

Parameter Conditions Min Typ Max Units

Operating Range 47-63 Hz 90 264 VAC
Inrush Current Limiting

Thermistor 120 VAC, cold start 30 APK

240 VAC, cold start 60 APK

Active Current Limit 264 VAC 19 APK
Efficiency Nominal line and full load 75 %
Power F actor Correction (PFC) 0.99

Meets IEC 1000-4-7/EN61000-3-2 (formerly IEC 555-2)

Remote Sense

Remote Sense is provided and will compensate for 1.0V
of line drop. Remote Sense leads are protected against
open, short and reversal.

Remote On/Off (Optional)

The power supply is turned on with a TTL logic ‘1’ (or open)
signal and turned off by a switch closure or TTL logic ‘0’
referenced to (-) sense terminal. Consult the factory for
other options.

Over V oltage Protection

Output #1: 15% of nominal voltage is typical.
The power supply will latch off until AC power is cycled.

Over Current Protection

Automatic recovery upon fault removal.

Transient Response

The peak output voltage e xcursion will not exceed 2% and
will recover within 1% in 200 µsec for a 25% step load.

Reverse Voltage Protection

The output is protected to rated load.

Power Fail Signal

Upon AC input voltage remov al, the power fail signal drops
to logic zero at least 10msec before loss of DC output.
Upon AC input turn-on, signal remains low until output is in
regulation. Consult the factor y for other options.

N+1 Load Share

Output has active load sharing circuitry. Units will load
share within 1% of the Maximum Rated Load.

Over Temperature Protection

Thermal switch turns off power supply if overheating occurs
and automatically restarts.

Safety

UL Recognized:UL File Number E13164 (1950)
CSA Certified: CSA File Number LR 9070C

(C22.2 No950, Level 6)

TUV License Number: R9773309 (EN60950) (IEC950)

Cooling

The unit is designed to operate with 30 CFM of airflow.

DC Power Good Signal

The signal is activated by a ±10% loss of regulation Active
low or high; TTL Lev el; common with (-) sense. Consult the
factory for other options.

SX400 2/98 REV APage 2